Assessment of surface water pollution in urban and industrial areas of Savar Upazila, Bangladesh

The present study has been conducted to determine the surface water quality of urban area in Savar, Dhaka, Bangladesh by determining some water quality parameters (Transparency, Temperature, pH, EC, Eh, DO, TSS, TDS, TS, BOD5, COD, TOC, Cl^-, Br-, SO4^-2, NO3^ -, NO2^ -, PO4 ^-3, TP, HCO3 - and Total alkalinity) as well as the status of phytoplankton’s community in the water from two lakes (Tiger Lake and AERE Lake) and one canal (Karnapara Canal). The water quality of the AERE Lake is better than the Tiger Lake and the Karnapara Canal. Organic Pollution Index (OPI) demonstrates that water bodies are severely polluted by organic matters in the study area. R mode Cluster Analysis (CA) reveals that the water bodies are polluted and the common sources of pollutants are anthropogenic (industrial, agricultural, municipal sewerage). The Principle Component Analysis/Factor Analysis (PCA/FA) identifies two dominant factors, responsible for data structure, explaining 100% of total variance in the data set. The PCA agrees with CA, suggesting that multiple anthropogenic sources are responsible for the surface water quality deterioration in this area. The present study reflects the actual scenario of surface water quality of Savar urban area, thus will be helpful for the policy planers and makers to take proper management and abatement strategies for the sustainable management of water resources in urban areas of Bangladesh.